Combined governor and fan mechanism for internal-combustion engines



Sept. 15.1925. 1,553,448

B. 'w. KEESE COBINED GOVERNOR AND FAN MECHANISM FOR INTEIiNAL COMBUSTION ENGINES Fi led Aug. '7, 1922 .2 Sheds-Sheet 1- @mww Bevef-I WKEE5E Sept. 15, 1925. x 1,553,448 r BpW. KEESE, 7 Comaiusn eovmmon 'ANDFAN MECHANISM FOR INTERNAL CouBuswxou memes Filed Aug. '7. 1922 2Sheets-Sheet 2 lllll.

. E1:verI W-Kee5E I Patented Sept. 15, 1925.

UNITED STATES PATE;

BEVERLY w. KEESE, on ANTIGO, wrsoonsrn assrenon TOANTVIGVO TRACTOR con-1,553,448 NT OFFICE."

PORATION, OF A NCL IGO, WISCONSIN, A CORPORATION OF WISCONSIN.

ooMBrnEn GOVERNOR AND ran MECHANISM FOR INTERNAL-COMBUSTION ENGINES.

Application filed August 7, 1922. SeriaI NO. 580,380.

T all whom it may concern.

Be it known that L'BEVERLY W. Knnsn, a citizen of the United States, andresident of Antigo, in the county of'Langlade and State of Wisconsin,have invented certain new and useful Improvements in Combined Governorand Fan Mechanism for Internal- Combustion Engines; and do herebydeclare that the'following is a full, clear, and exact descriptionthereof.

This invention relates to combined fan and governor mechanism, and isparticularly directed to a mechanism of this typesuitable for use withinternal 7 combustion engines such as those found upon tractors Objectsof this invention are to provide a unitarily combined fan and governorfor internal combustion engines; to provide such a device so constructedas to use the same shaft, bearings, housing and similar parts; and toprovide a substantially flexible drive for the fan and a positive drivefor the governor.

Further objects'are to pro-vide a combined fan and governor mechanismsuitable for automotive apparatus, such as tractors, so

organized that it may have both manual and automatic control; to providea dust and oil proof housing for the parts; toprovide means for readilyadjusting the stress imposed by resilient means associated with thegovernor and to provide a combined fan and governor of pleasing andattractive appearance.

An embodiment of the invention is shown in the accompanyingdrawing, inwhich 1 Figure 1 shows diagrammatically the relative positions of thecombined governor and fan and other portions of the system.

Figure 2 is a vertical sectional view of the combined governor and fan.

Figure 3 is a horizontal sectional view of a portion of the structureshown in Figure 3.

Figure 4'is a transverse sectional view on the line 4-4 of Figure 3.

Figure l'shows the general arrangement, and will first be described. Inthis figure, the engine casing, or a continuation thereof, is indicatedat l, to which is bolted thecasing 2 for the unitary governor and fanmechanism. The drive shaft for this mechanism is indicated at 3, andprojects forwardly thru the casing and carries the hub 4 of the fan,such fan conveniently being one in which the projections 5 from theblades are secured to the hub by means of a plupivotally mounted,thereon, a lever 10, whose lower end is connected by means of a rod 11with the throttle valve crank arm 12, the outer casing' l? of suchthrottle valve being shown. in Figure 1. The upper end of the lever 10is connected by means of the rod 14 with the lower end 15 of 'a'leverwhichis regidly joined to the manually "movable arm 16. I

It will be seen from the structure thus far described that the action ofthe governor may be readily modified by the manually controlledportions. of'the mechanism, and that the setting of the throttle valvemay be controlled manually, while at the same time interposing thegovernor vcontrol. I i The shaft 3 is equippedwith a pinion 1 rigidlysecured at its rear end adjacent the rear ball bearing 18. .The pinionis directly connected bymeans of gearing with the engine shaft, so thatthe shaft 3 may be posi-. tively driven from the. engine. The other endof-theshaft has loosely secured thereto,

the hub4 of the fan, such hub being held against a shouldered portion 19of the shaft by means of a nut 20 screwed upon the outer end of suchshaft. This hub is free to rotate with respect to the shaft, but isretained thereon against longitudinal movement. It

has a threaded portion 21, upon which is screwed a disk 22,such diskaccurately and slidably fitting the machined surface 23 of the outer endof the casing 2. The rear portion of thehub 4 is carried by the ballbearings 24, as may be seen from Figure 2;

A governor bracket 24, which may be of split formation, is secured tothe shaft 3 by means of the clamping bolts 25. A helical spring 26 hasone end rigidly secured in the governor bracket, and it has itsother'end rigidly secured in the hub 4. of the fan. It is spaced aslight distance from the shaft and its surrounding port-ions, so as tobe free to yield under suddenly applied force. It will be seen, there-,fore, that although the shaft Sis positively driven from the internalcombustion engine, that the fan and its connection with the shaft is notsubjected to enormous stresses, due to sudden changes in the speed ofrotationybut thatsuch changes in the speed of rotation are modified bythe spring 26 V efore they are transmitted to the fan. In this manner,it is possible to utilize a direct gear connection with the fan shaftwithout danger of imposing unsafe stresses upon the mechanism. 7

' The governor bracket 24 is provided with a pair of overhangingrearwardly projectino arms 27, which are bifurcated, or

r foi ked, with the legs'28 thereof, spaced a material distance apart.The weighted levers, which are the centrlfugally responsive 1nembers,each comprise a rearwardly projecting weight '29, which has inwardlyprojecting arms pivotally joined to the legs 28 of the bracket by meansof a pintle 31. I One of these 211111830 has an inwardly offset portionconstituting a rock arm 32,

I which may carry a roller 33 adjacent its .end. It is to be noted thatthe rollers 33 of the weighted levers are positioned upon opposite sidesof the shaft 3, and bear against the forward end of a slidable sleeve 3emounted upon such shaft. If desired, this sleeve may be supplemented bya plurality of Washers adjacent its ends, to further reduce friction.The pintles 31 are retained in position by suitable pins, and carry thecoiled portion 35 of suitable z= springs, whose terminal portions bearagainst the weighted portions of the levers and against the overhangingarms 27 of the governor bracket, as may be seen from Figures 2 and 3,thereby tending 'to force the weighted portions 29 of the leversinwardly.

The transverse control shaft 8 carries, at its inner end within thecasing, forked lever 36, provided with inwardly projecting pins whichmay be equipped with rollers 37, if desired, and which bear against therear end of the slidable sleeve 34. This shaft 8 is carried in arevolubly mounted bearing 38, which is locked in its adjusted positionby means of a set screw 39, whose inner end seats within groove 40formed in the bearing 38. A helical spring L1 is wrapped about the shaft8, and has one end secured to the arm 36, and its other end secured tothe bearing 38. A convenient way of of pleasing contour.

It will be seen, therefore, that any slidv ing 'motion given the sleeve34 by the cen- V trifugally responsive means will be imparted to the armor lever 36, and will therefore rock the transverse control shaft 8,thereby varying the position of the pivot point of the lever 10. It willalso be seen that the desired tension may be given the spring 41 byadjusting the bearing 38, and that such adjustment may-be maintained bylocking the bearing in its adjusted position by means of the set screw39. 7'

It will be seen that a combined governor and fan mechanism have beenprovided for an internal combustion engine, and so organized that themechanism may be car ried in a dust proof and oil proof housing It willalso be seen that a single shaft suffices both for the governor and fan,and that the governor is positively driven from the engine while the fanis yieldably driven therefrom.

1. In combination, a housing, a shaft mounted therein and having oneendprojecting outwardly therefrom, a governor bracket rigidly mountedupon said shaft and positioned within said housing, governor mechanismcarried by said bracket, control means operatively connected withsaidmechanism and projecting outwardly through said housing,- a fanloosely mounted upon the outwardly projecting end of said shaft,

and resilient means operatively connecting said fan and shaft.

2. The combination of an internal combustion engine having a casing, ashaft positively geared to such engine, a fan loosely carried by saidshaft, a spring rigidly attached at one end to said shaft and rigidlyattached at its other end to said fan, a governor rigidly attached tosaid shaft, and a casing enclosing said governor and opening BEVERLYKEESE;

